A multilayer ceramic capacitor includes a multilayer body including dielectric layers, inner-electrode layers, and outer electrodes coupled to the inner-electrode layers. The multilayer body includes Ba, Ti, Ca, Mg, Zr, and R, and when the Ti content is defined as 100 parts by mole, the relative amounts are as follows: Ca, 0.03 parts by mole or more and 0.15 parts by mole or less, Mg, 0.01 parts by mole or more and 0.09 parts by mole or less, R, 2.5 parts by mole or more and 8.4 parts by mole or less; Zr, 0.05 parts by mole or more and 3.00 parts by mole or less: Si, 0.5 parts by mole or more and 4.0 parts by mole or less; and P, 0.005 parts by mole or more and 0.500 parts by mole or less. Ca is in a vicinity of the center of crystal grains contained in the dielectric layers.

A ceramic electronic component includes a body, including a dielectric layer and an internal electrode. The dielectric layer includes a plurality of dielectric grains, and at least one of the plurality of dielectric grains has a core-dual shell structure having a core and a dual shell. The dual shell includes a first shell, surrounding at least a portion of the core, and a second shell, surrounding at least a portion of the first shell. The dual shell includes different types of rare earth elements R1 and R2, and R2.sub.S1/R1.sub.S1 is 0.01 or less and R2.sub.S2/R1.sub.S1 is 0.5 to 3.0, where R1.sub.S1 and R1.sub.S2 denote concentrations of R1 included in the first shell and the second shell, respectively, and R2.sub.S1 and R2.sub.S2 denote concentrations of R2 included in the first shell and the second shell, respectively.

A capacitor component includes: a body including a dielectric layer and an internal electrode layer; and an external electrode disposed on the body, and connected to the internal electrode layer. A surface color of the body is R≤30, G≤30, B≤40 based on R/G/B, and a dielectric constant of the dielectric layer is 2000 or more and 4000 or less.

A multilayer capacitor includes a body including a multilayer structure in which a plurality of dielectric layers are stacked, and further including a plurality of internal electrodes having a dielectric layer interposed therebetween and external electrodes disposed on external surfaces of the body and connected to the internal electrodes. The body further includes an active portion in which the plurality of internal electrodes are located to form capacitance and a side margin portion covering a first surface and a second surface of the active portion opposing each other. An average grain size of a dielectric layer included in the active portion is different from an average grain size of a dielectric layer included in the margin portion. The side margin portion includes an extending portion extending between the external electrodes and the internal electrodes to cover a portion of the internal electrodes.

A dielectric composition includes a ceramic powder, a high polymerization binder, and a low polymerization binder type dispersant having a degree of polymerization between 100 and 1,000.

The capacitor includes a dielectric body portion including ceramic layers and internal-electrode layers laminated in an alternating manner, and a cover portion provided in a periphery of the dielectric body portion. The cover portion includes pores. A part of the cover portion located in a position in a direction perpendicular to a lamination direction of the ceramic layers and the internal-electrode layers is a side surface cover portion. When the side surface cover portion is divided into three equal regions in a width direction, the regions being a dielectric body portion-side region, a central region, and a surface-side region, the number of the pores is higher in the dielectric body portion-side region than in the central region and the surface-side region.

A ceramic electronic device includes an element body and an external electrode. The element body is formed by laminating a ceramic layer and an internal electrode layer. The external electrode is electrically connected to at least one end of the internal electrode layer. The external electrode includes a baked electrode layer. The baked electrode layer includes a first region and a second region. The first region is contacted with an end surface of the element body and located near a joint boundary with the element body. The second region is located outside the first region and constituting an outer surface of the baked electrode layer. The first region includes a first glass having a predetermined composition. The second region includes a second glass having a predetermined composition.

The present invention provides a polyvinyl acetal resin which leaves less fine undissolved matter when dissolved in an organic solvent and thus can improve productivity particularly when used as a binder for a ceramic green sheet, and which can also provide a ceramic green sheet having excellent toughness and enables production of a highly reliable multilayer ceramic capacitor. Provided is a polyvinyl acetal resin having: a wavenumber A (cm.sup.−1) of a peak within a range of 3,100 to 3,700 cm.sup.−1 in an IR absorption spectrum measured using an infrared spectrophotometer; and a hydroxy group content (mol %), the wavenumber A of the peak and the hydroxy group content satisfying relations of the following formulas (1) and (2):

[(3,470−A)/Hydroxy group content]≤5.5  (1)

(3,470−A)≤185  (2)

wherein A is a wavenumber which is lower than 3,470 cm.sup.−1 and at which a transmittance a (%) satisfying [100−(100−X)/2] is exhibited, where X (%) is a minimum transmittance of the peak within the wavenumber range of 3,100 to 3,700 cm.sup.−1.

A ceramic electronic component includes a body including a dielectric layer and an internal electrode, and an external electrode disposed on the body and connected to the internal electrode. The dielectric layer includes a plurality of dielectric grains, and at least one of the plurality of dielectric grains has a core-dual shell structure having a core and a dual shell. The dual shell includes a first shell surrounding at least a portion of the core, and a second shell surrounding at least a portion of the first shell, and a concentration of a rare earth element included in the second shell is more than 1.3 times to less than 3.8 times a concentration of a rare earth element included in the first shell.

A ceramic electronic device includes a multilayer structure in which each of a plurality of dielectric layers and each of a plurality of internal electrode layers are alternately stacked. A relationship of “I.sub.A/I.sub.B>0.30” is satisfied and a peak current value I.sub.B is 100 pA/mm.sup.2 or less in a TSDC in which a polarizing temperature is 150 degrees C., a polarizing electric field is 15 V/μm to 20 V/μm, a polarizing time is 60 minutes, and an increasing speed of temperature is 10° C./minute, when a peak current of a low temperature side of a temperature range of 160 degrees C. or more and less than 230 degrees C. is I.sub.A and a peak current of a high temperature side of a temperature range of 230 degrees C. or more and 350 degrees C. or less is I.sub.B.